Home / 1,246,157,724-1,868,839,053.84-428,072,757.60

Finding the Fourth Proportional to 1,246,157,724, 1,868,839,053.84 and 428,072,757.60

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Solution

The fourth proportional to 1,246,157,724, 1,868,839,053.84 and 428,072,757.60 is: 641,972,578.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246,157,724 : 1,868,839,053.84 = 428,072,757.60 : x
  2. Step 2: Convert to fraction form
    1,246,157,724/1,868,839,053.84 = 428,072,757.60/x
  3. Step 3: Cross multiply
    1,246,157,724x = 1,868,839,053.84 × 428,072,757.60
  4. Step 4: Simplify right side
    1,246,157,724x = 799,999,087,287,863,680
  5. Step 5: Solve for x
    x = 799,999,087,287,863,680/1,246,157,724
  6. Step 6: Final answer
    x = 641,972,578.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.